Support assembly for a remotely fired powder-charge-operated bolt setter

ABSTRACT

An assembly, for supporting a remotely operated bolt setter on a structure into which anchoring elements are to be inserted, is formed of a contact arm which extends laterally from an elongated extension member secured to and extending from the bolt setter. An abutment member is movably attached to the contact arm at a position spaced laterally from the extension member for holding the bolt setter on the structure so that by pivoting the extension member relative to the contact arm the bolt setter can be urged in the direction in which the anchoring elements are to be inserted for affording a compressing safety action against the barrel of the bolt setter before it can be fired.

Unite States Patent Mailer et al. [4 1 Jan. 25, 1972 [54] SUPPORTASSEMBLY FOR A 3,368,730 2/1968 Bayer ..227/l56 X REMOTELY FIRED POWDERCHARGE 3,482,753 l2/l969 Bayer et al ..227/l0 UPERATED BOLT SETTERPrimary Examiner-Granville Y. Custer, Jr. [72] Inventors: Elmar Maier,Feldkirch-Tisis; Herbert Attorney-"Mommy and Tore" Rangger, Frastanz,both of Austria [73] Assignee: Aktiengesellschaft, Schaan, Liechten-ABSTRACT [22] Filed Jul 13 1970 An assembly, for supporting a remotelyoperated bolt setter y on a structure into which anchoring; elements areto be in- I 2] l Appl. No.: 54,364 serted, is formed ofa contact armwhich extends laterally from an elongated extension member secured toand extending [30] Ford A cation Prior Bat from the bolt setter. Anabutment member is movably atg pp y tached to the contact arm at aposition spaced laterally from July 18, 1969 Germany .,P 19 36 739,6 theextension member for holding the bolt setter on the structure so that bypivoting the extension member relative to the [52] US. Cl.....227/9,227/ 156 Contact m th b lt setter can be urged in the directionin [51] Int. Cl. B25 1/03 which the anchoring elements are to beinserted for affording 58] Field of Search ..227/8, 9, 156 a Compressingty a ion against the barrel of the bolt setter before it can be fired.[56] References Cited 4 Claims, 2 Drawing Figures UNITED STATES PATENTS3,291,356 12/1966 Armstrong ..227/l56 X PATENIEU JAN25 m2 SHEET 20F 2Fig. 2

SUMMARY OF THE INVENTION The present invention is directed to a remotelyoperated powder-charge-operated bolt setter for driving anchoringelements into a structure, such as in attaching exothermal plates tochill molds, and, more particularly, it is directed to a supportarrangement for the bolt setter so that it can be supported on thestructure into which the anchoring element is to be inserted while acompressing safety action is exerted on the barrel of the bolt setter inpreparation for its firing.

In remotely operated bolt setters of the type to which the presentinvention is directed, because of problems experienced in handling thebolt setter, it has been difficult to utilize the conventionalcompressing safety action on the barrel of the bolt setter which permitsthe firing of the device only after a compressing action has beenexerted on the barrel by pressing it against a surface through which theanchoring element is to be inserted. Since the compressing safety actioncould not be performed it was necessary to provide costly substitutesolutions to provide the requisite safety action for firing the boltsetter. Therefore, the primary object of the present invention is toprovide a support arrangement for a remotely operated bolt setter sothat the requisite compressing safety action can be easily achieved.

In accordance with the present invention, a remotely operated boltsetter can effect the desired compressing safety action by securing alaterallylextending arm, supporting a downwardly directed abutmentmember, on an extension member which is secured to and extends from thebolt setter. The contact arm and its abutment member serves as a supportfor the bolt setter on the structure into which the anchoring elementsare to be inserted. When the bolt setter is supported on the structure,its extension member can be pivoted relative to the contact arm so thatthe bolt setter can be pressed against the surface into which theanchoring element is to be inserted. The abutment member affords acounterbearing for the bolt setter during the compressing safety action.In remotely operating the bolt setter, such as in attaching exothermalplates within a chill mold, the operator stands on the narrow mold rimon which the contact arm and its abutment member support the bolt setterand by pivoting the extension member the bolt setter can be pressedagainst the exothermal plate while the abutment member prevents anyslipping of the bolt setter.

Preferably, the abutment member is adjustably attachable in differentpositions along the contact arm for adaptation to various wallthicknesses of the mold or other structure on which the remotelyoperated bolt setter is used. Further, the contact arm is pivotallysecured to the extension member. so that it is retained by means of aspring in a neutral position at an oblique angle to the extensionmember, that is with the portion of the extension member located on theopposite side of the contact arm from the bolt setter arranged at anangle of less than 90f to the contact arm. By virtue of this normallyobliquely disposed relationship between the contact arm and theextension member, the bolt setter is spaced from the surface of thestructure into which the anchoring element is to be inserted whereby thebolt setter can be easily positioned for operation. After the boltsetter has been positioned, by pivoting the extension member about thecontact arm, the bolt setter can be aligned perpendicularly with thestructure and its barrel can be compressed for providing the necessarysafety action in preparation for firing.

Another preferred feature of the invention is the use of a bracket forsecuring the contact arm to the extension member so that it can bemovably positioned along the extension member to accommodate varyingdimensions between the contact arm and the bolt setter.

The various features of novelty which characterize the invention arepointed out with particularity in the claims annexed to and forming apart of this specification. For a better 2 understanding of theinvention, its operating advantages and specific objects attained by itsuse, reference should be had to the accompanying drawings anddescriptive matter in which there is illustrated and described apreferred embodiment of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS In the drawings:

FIG. l is an elevational view, partly in section, illustrating apreferred embodiment of the present invention;

FIG. 2 is a schematic representation of the device disclosed in FIG. 1being manipulated by an operator for securing plates to the interior ofa mold.

DETAILED DESCRIPTION OF THE INVENTION As shown in FIG. 1, apowder-charge-operated bolt setter l is positioned at the lower end of arod-shaped extension member which has a handle 3 positioned at itsoppositely arranged upper end. A release button4 is positioned in thehandle 3 for actuating a remote firing mechanism for the bolt setter,this remote mechanism is not shown since it does not form a part of theinvention. Positioned intermediate the ends of the extension member 2 isa holding bracket 7 which can be secured in different positions alongthe extension member by means of a screw 5 and a turning knob 6. Securedto the bracket 7 is a pin 8 on which a contact arm 9 is pivotallymounted. In addition, an elongated spring 11 is secured at one end tothe bracket and at its other, end to the contact arm so that the contactarm is held at an acute angle to the upper part of the extension member,that isthe part of the extension member located on the opposite side ofthe contact arm from the bolt setter.

Positioned on the contact arm 9 and spaced laterally outwardly from theextension member 2 is a slider 12 to which a downwardly extendingabutment member orstrap is attached. A plurality of recesses 14 areformed in the upper surface of the contact arm and a pin 15 ispositionable through the slider 12 into these recesses for positioningthe slider and the abutment strap at different locations spacedlaterally from the extension member.

In FIG. 2 a mold 21 is shown with an exothermal plate 20 placed inposition to be secured to the mold by means of the bolt setter 1. Inpreparation for driving anchoring elements through the exothermal plate20 into the interior surface 21a of the mold, the bolt setter l islowered by means of the extension member 2 downwardly into the molduntil the contact arm 9 rests on the rim 21b of the mold. In thisposition the abutment strap 13 is disposed in contact with the outersurface 210 of the mold and holds the bolt setter l and its extensionmember 2 in position. Since the spring 11 normally holds the extensionmember at an oblique angle to the contact member, note FIG. I, initiallythe extension member assumes the position shown in dashed lines in FIG.2 with the bolt setter l spaced outwardly from the surface of theexothermal plate 20. By pivoting the extension member 2 relative to thecontact arm 9, it moves into the position shown in full lines in FIG. 2,that is substantially perpendicular -to the contact ann 9, and with itsforward or firing end pressed against the surface of the exothermalplate. As the bolt setter l at the end of the extension member 2 ispivoted toward the exothermal plate, its forward end is compressed sothat the conventional compressing safety action is accomplished wherebythe bolt setter is positioned for inserting an anchoring element. Withthe compressing safety action accomplished, the anchoring elements ornails 22 are tired through the exothermal plate 20 into the interiorsurface 21a of the mold 21. During the pivoting and the remote firing ofthe bolt setter l, the abutment strap 13 is secured against the outerwall 210 of the mold and prevents any displacement of the overalldevice. Accordingly, the operator standing on the narrow mold rim 21bcan carry out the necessary operating steps in safety and without anydifficulty. Within the mold 21, on the right side as shown in FIG.

2, a pair of nails 22 have been driven through an exothermal plate 20'for securing it in position on the mold.

What is claimed is:

l. A powder-charge-operated bolt setter for the remote firing ofanchoring elements into a receiving structure, such as in securingexotherrnal plates to the interior surfaces of chill molds, includes adevice for driving anchoring elements having a firing end from which theanchoring elements are driven, an elongated extension member secured atone end thereof to said device and having a free-end spaced from saiddevice, wherein the improvement comprises a contact arm mounted on saidextension member at a position spaced between said device and the freeend of said extension member and said contact arm extending laterallyfrom said extension member, said contact arm and extension arm beinginterconnected so that they can be pivoted relative to one another, anabutment member attached to said contact arm at a'position spaced fromsaid extension member and extending outwardly from said contact am sothat when said contact arm is supported on the member into which theanchoring element is to be inserted by said device said abutment memberbears against a surface of the member into which the anchoring member isto be inserted which surface faces oppositely to the surface into whichthe anchoring member is to be inserted, whereby said abutment memberforms a countersupport for said device so that it holds said contact armagainst the member into which the anchoring element is to be insertedwhile said extension member pivots relative to said contact arm forcompressing the firing end of said device against a surface in thedirection of the member into which the anchoring element is to beinserted.

2. A powder-charge-operated bolt setter, as set forth in claim 1,wherein means are arranged for adjustably securing said abutment memberto said contact arm so that the distance between said abutment memberand said extension member can be varied.

3. A powder-charge-operated bolt setter, as set forth in claim 2,wherein said means for adjustably securing said abutment members to saidcontact arm comprising a slider movably secured to said contact arm andhaving said abutment member attached thereto, a plurality of recessesformed in and spaced across the dimension of said contact arm extendinglaterally from said extension member, and a pin extending through saidslider and removably securable within one of said recesses in saidcontact arm for adjustably attaching said abutment member to saidcontact arm.

4. A powder-charge-operated bolt setter, as set forth in claim 1,wherein a holding bracket assembly is movably secured to said extensionmember and comprises a holding bracket fitted to said extension member,a screw and turning knob for adjustably securing said bracket to saidextension member, a pin extending through said bracket and positionedwithin said contact arm for pivotaLLY fixing said contact arm on saidbracket, and a spring attached to said bracket and to said contact armfor positioning the portion of said extension member on the oppositeside of said bracket from said device at an acute angle with saidcontact arm.

1. A powder-charge-operated bolt setter for the remote firing ofanchoring elements into a receiving structure, such as in securingexothermal plates to the interior surfaces of chill molds, includes adevice for driving anchoring elements having a firing end from which theanchoring elements are driven, an elongated extension member secured atone end thereof to said device and having a free-end spaced from saiddevice, wherein the improvement comprises a contact arm mounted on saidextension member at a position spaced between said device and the freeend of said extension member and said contact arm extending laterallyfrom said extension member, said contact arm and extension arm beinginterconnected so that they can be pivoted relative to one another, anabutment member attached to said contact arm at a position spaced fromsaid extension member and extending outwardly from said contact arm sothat when said contact arm is supported on the member into which theanchoring element is to be inserted by said device said abutment memberbears against a surface of the member into which the anchoring member isto be inserted which surface faces oppositely to the surface into whichthe anchoring member is to be inserted, whereby said abutment memberforms a countersupport for said device so that it holds said contact armagainst the member into which the anchoring element is to be insertedwhile said extension member pivots relative to said contact arm forcompressing the firing end of said device against a surface in thedirection of the member into which the anchoring element is to beinserted.
 2. A powder-charge-operated bolt setter, as set forth in claim1, wherein means are arranged for adjustably securing said abutmentmember to said contact arm so that the distance between said abutmentmember and said extension member can be varied.
 3. Apowder-charge-operated bolt setter, as set forth in claim 2, whereinsaid means for adjustably securing said abutment members to said contactarm comprising a slider movably secured to said contact arm and havingsaid abutment member attached thereto, a plurality of recesses formed inand spaced across the dimension of said contact arm extending laterallyfrom said extension member, and a pin extending through said slider andremovably securable within one of said recesses in said contact arm foradjustably attaching said abutment member to said contact arm. Pg,12 4.A powder-charge-operated bolt setter, as set forth in claim 1, wherein aholding bracket assembly is movably secured to said extension member andcomprises a holding bracket fitted to said extension member, a screw andturning knob for adjustably securing said bracket to said extensionmember, a pin extending through said bracket and positioned within saidcontact arm for pivotally fixing said contact arm on said bracket, and aspring attached to said bracket and to said contact arm for positioningthe portion of said extension member on the opposite side of saidbracket from said device at an acute angle with said contact arm.